python中学生成绩管理系统,Python学生成绩管理
本文主要详细介绍了一个用python实现的简单的学生成绩管理系统。本文中的示例代码非常详细,具有一定的参考价值。感兴趣的朋友可以参考一下。
本文分享用python实现学生成绩管理系统的具体代码,供大家参考。具体内容如下
需求:
代码:
导入操作系统
filename=student.txt
定义主():
而True:
菜单()
Choice=int(input(请选择:))
if选择在[0,1,2,3,4,5,6,7]:
if choice==0:
回答=输入(你确定要退出吗?是/否’)
如果答案==y 或答案==Y:
打印(感谢您的使用!)
破裂
else:
继续
elif choice==1:
插入()
elif choice==2:
搜索()
elif choice==3:
删除()
elif choice==4:
修改()
elif choice==5:
排序()
elif choice==6:
总计()
else:
显示()
#菜单
定义菜单():
打印(===============学生成绩管理系统====================)
打印(===============功能菜单==============================)
打印( \t\t1,输入学生信息)
打印( \t\t2,查找学生信息)
打印( \t\t3,删除学生信息)
打印( \t\t4,修改学生信息)
打印( \t\t5,排序)
打印( \t\t6,计算学生人数)
打印( \t\t7,显示所有学生信息)
打印( \t\t0,退出系统)
打印(-)
#插入
定义插入():
student_list=[]
而True:
ID=input(请输入ID(如1001): )
如果不是id:
破裂
Name=input(请输入一个名称:)
如果不命名:
破裂
尝试:
english=int(输入(输入英语等级:))
python=int(input( input python grade:))
java=int(input(input java grade:))
例外:
打印(输入结果无效!“再进来!”)
继续
student={id:id, name:name, english:english, python:python, java:java}
学生_列表.追加(学生)
回答=输入(‘继续补充信息!是/否)
如果答案==y:
继续
else:
破裂
#调用save函数将其保存在文本中
保存(学生列表)
打印(学生信息输入成功!)
#保存
def保存(lst):
尝试:
stu_txt = open(filename,a,encoding=utf-8)
except:
stu_txt = open(filename,w,encoding=utf-8)
for item in lst:
stu_txt.write(str(item)+\n)
stu_txt.close()
# 搜索
def search():
while True:
student_name = input("请输入你要查找的学生姓名:")
if student_name:
if os.path.exists(filename):
with open(filename,r,encoding=utf-8) as rfile:
student_old = rfile.readlines()
else:
student_old = []
if student_old:
d = {}
flag = False
for item in student_old:
d = dict(eval(item))
if d[name] == student_name:
flag = True
student_show(d)
else:
pass
else:
print("无学生信息,请添加!")
if flag:
print("查询成功")
else:
print("查询失败")
else:
print("没有输入学生姓名!")
answer = input("请问是否继续查询:y/n")
if answer == "y":
continue
else:
break
# 展示个人信息
def student_show(dic):
format_title = {:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}
print(format_title.format(ID,姓名,英语成绩,python成绩,java成绩,总成绩))
format_data = {:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}
print(format_data.format(dic.get(id),
dic.get(name),
dic.get(english),
dic.get(python),
dic.get(java),
int(dic.get(english))+int(dic.get(python))+int(dic.get(java)),
))
# 删除
def delete():
while True:
student_id = input("请输入要删除的学生ID:")
if student_id:
if os.path.exists(filename):
with open(filename,r,encoding=utf-8) as file:
student_old = file.readlines()
else:
student_old=[]
flag = False
if student_old:
with open(filename,w,encoding=utf-8) as wfile:
d={}
for item in student_old:
d = dict(eval(item))
if d[id]!=student_id:
wfile.write(str(d)+"\n")
else:
flag = True
if flag:
print(f"{student_id}已经被删除!")
else:
print(f"{student_id}没有找到!")
else:
print("无学生信息!")
break
show()
answer = input("是否继续删除?y/n")
if answer == y:
continue
else:
break
else:
print("请输入要删除的ID:")
continue
# 修改
def modify():
while True:
student_id = input("请输入要修改的学生ID:")
if student_id:
if os.path.exists(filename):
with open(filename,r,encoding=utf-8) as file:
student_old = file.readlines()
else:
student_old=[]
if student_old:
with open(filename,w,encoding=utf-8) as wfile:
d = {}
for item in student_old:
d = dict(eval(item))
if d[id] == student_id:
answer = input(已经找到该学生信息,是否修改:y/n?)
flag = False
if answer:
d[name]=input("姓名:")
d[english]=int(input("english:"))
d[python]=int(input("python:"))
d[java]=int(input("java:"))
wfile.write(str(d)+"\n")
flag = True
else:
wfile.write(str(d)+"\n")
break
else:
wfile.write(str(d)+"\n")
if flag:
print("修改成功!")
else:
print("修改失败!")
else:
print("无学生信息,请添加")
answer = input("请问是否继续修改?y/n")
if answer == "y":
continue
else:
break
else:
print("输入错误!")
# 排序
def sort():
while True:
if os.path.exists(filename):
with open(filename,r,encoding=utf-8) as file:
student_old = file.readlines()
student_new = []
d={}
for item in student_old:
d=dict(eval(item))
student_new.append(d)
asc_and_desc = int(input("怎么排序:0 升序 1 降序:"))
choice = int(input("按照什么排序:1 english 2 python 3 java 0 总成绩:"))
if choice == 1:
student_new.sort(key=lambda x:int(x[english]),reverse=asc_and_desc)
elif choice == 2:
student_new.sort(key=lambda x:int(x[python]),reverse=asc_and_desc)
elif choice == 3:
student_new.sort(key=lambda x:int(x[java]),reverse=asc_and_desc)
elif choice == 0:
student_new.sort(key=lambda x:int(x[english])+int(x[python])+int(x[java]),reverse=asc_and_desc)
else:
print("输入有误")
sort()
else:
print("无学生信息")
format_title = {:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}
print(format_title.format(ID,姓名,英语成绩,python成绩,java成绩,总成绩))
format_data = {:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}
for dic in student_new:
print(format_data.format(dic.get(id),
dic.get(name),
dic.get(english),
dic.get(python),
dic.get(java),
int(dic.get(english))+int(dic.get(python))+int(dic.get(java)),
))
answer = input("请问是否继续排序?y/n")
if answer == "y":
continue
else:
break
# 总人数
def total():
if os.path.exists(filename):
with open(filename,r,encoding=utf-8) as file:
student_old = file.readlines()
print(一共有,len(student_old),名学生!)
else:
print("无人员资料")
import msvcrt
msvcrt.getch()
# 展示
def show():
if os.path.exists(filename):
with open(filename,r,encoding=utf-8) as file:
student_old = file.readlines()
d = {}
students = []
for item in student_old:
d = dict(eval(item))
students.append(d)
else:
print("没有信息!")
if len(students):
format_title = {:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}
print(format_title.format(ID,姓名,英语成绩,python成绩,java成绩,总成绩))
format_data = {:^6}\t{:^12}\t{:^8}\t{:^10}\t{:^10}\t{:^8}
for dic in students:
print(format_data.format(dic.get(id),
dic.get(name),
dic.get(english),
dic.get(python),
dic.get(java),
int(dic.get(english))+int(dic.get(python))+int(dic.get(java)),
))
else:
print("无人员信息!")
import msvcrt
msvcrt.getch()
if __name__ == __main__:
main()
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